s390: add stack switch helper

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2017-09-07 17:03:19 +02:00
commit ff340d2472
2 changed files with 50 additions and 9 deletions